Hi,
On Tue, 17 Nov 2015 13:56:48 +0800
Chunfeng Yun <chunfeng....@mediatek.com> wrote:
> On driver detach, devm_phy_release() will put a refcount to
> the phy, so gets a refconut to it before return.
>
> Change-Id: I56fe428bf945f19c38d56245978c8ca17340eb2c
This line need to be removed
> Signed-off-by: Chunfeng Yun <chunfeng....@mediatek.com>
> ---
> drivers/phy/phy-core.c | 21 +++++++++++++++------
> 1 file changed, 15 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
> index fc48fac..8c7f27d 100644
> --- a/drivers/phy/phy-core.c
> +++ b/drivers/phy/phy-core.c
> @@ -636,8 +636,9 @@ EXPORT_SYMBOL_GPL(devm_of_phy_get);
> * @np: node containing the phy
> * @index: index of the phy
> *
> - * Gets the phy using _of_phy_get(), and associates a device with it using
> - * devres. On driver detach, release function is invoked on the devres data,
> + * Gets the phy using _of_phy_get(), then gets a refcount to it,
> + * and associates a device with it using devres. On driver detach,
> + * release function is invoked on the devres data,
> * then, devres data is freed.
> *
> */
> @@ -651,13 +652,21 @@ struct phy *devm_of_phy_get_by_index(struct device
> *dev, struct device_node *np,
> return ERR_PTR(-ENOMEM);
>
> phy = _of_phy_get(np, index);
> - if (!IS_ERR(phy)) {
> - *ptr = phy;
> - devres_add(dev, ptr);
> - } else {
> + if (IS_ERR(phy)) {
> devres_free(ptr);
> + return phy;
> }
>
> + if (!try_module_get(phy->ops->owner)) {
> + devres_free(ptr);
> + return ERR_PTR(-EPROBE_DEFER);
> + }
> +
> + get_device(&phy->dev);
> +
> + *ptr = phy;
> + devres_add(dev, ptr);
> +
> return phy;
> }
> EXPORT_SYMBOL_GPL(devm_of_phy_get_by_index);
--
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